// Modal Dialog Box
// copyright 8th July 2006 by Stephen Chapman
// http://javascript.about.com/
// permission to use this Javascript on your web page is granted
// provided that all of the code in this script (including these
// comments) is used without any alteration
function pageWidth() {return window.innerWidth != null? window.innerWidth: document.documentElement && document.documentElement.clientWidth ? document.documentElement.clientWidth:document.body != null? document.body.clientWidth:null;}

function pageHeight() {return window.innerHeight != null? window.innerHeight: document.documentElement && document.documentElement.clientHeight ? document.documentElement.clientHeight:document.body != null? document.body.clientHeight:null;}

function posLeft() {return typeof window.pageXOffset != 'undefined' ? window.pageXOffset:document.documentElement && document.documentElement.scrollLeft? document.documentElement.scrollLeft:document.body.scrollLeft? document.body.scrollLeft:0;}
function posTop() {return typeof window.pageYOffset != 'undefined' ? window.pageYOffset:document.documentElement && document.documentElement.scrollTop? document.documentElement.scrollTop: document.body.scrollTop?document.body.scrollTop:0;}
function $(x)
{
	return document.getElementById(x);
}
function scrollFix(){var obol=$('ol');obol.style.top=posTop()+'px';obol.style.left=posLeft()+'px'}
function sizeFix(){var obol=$('ol');obol.style.height=pageHeight()+'px';obol.style.width=pageWidth()+'px';}
function kp(e){ky=e?e.which:event.keyCode;if(ky==88||ky==120)hm();return false}

function inf(h)
{
	tag=document.getElementsByTagName('select');
	for(i=tag.length-1;i>=0;i--)
		tag[i].style.visibility=h;
	tag=document.getElementsByTagName('iframe');
	for(i=tag.length-1;i>=0;i--)
		tag[i].style.visibility=h;
	tag=document.getElementsByTagName('object');
	for(i=tag.length-1;i>=0;i--)
		tag[i].style.visibility=h;
}

function sm(obl, wd, ht)
{
	var h='hidden';
	var b='block';
	var p='px';
	var obol=$('ol'); 
	var obbxd = $('mbd');
	obbxd.innerHTML = $(obl).innerHTML;
	obol.style.height=pageHeight()+p;
	obol.style.width=pageWidth()+p;
	obol.style.top=posTop()+p;
	obol.style.left=posLeft()+p;
	obol.style.display=b;
	var tp=posTop()+((pageHeight()-ht)/2)-12;
	var lt=posLeft()+((pageWidth()-wd)/2)-12;
	var obbx=$('mbox');
	
	obbx.parentNode.style.top=(tp<0?0:tp)+p;
	obbx.parentNode.style.left=(lt<0?0:lt)+p;
	obbx.parentNode.style.width=wd+p;
	obbx.parentNode.style.height=ht+p;
	inf(h);
	if(is.ie) {
		obbx.parentNode.style.display=b;
	}else {
		obbx.parentNode.style.display = b;
	}
	return false;
}
function hm(){
	var v='visible';
	var n='none';$('ol').style.display=n;
	$('mbox').parentNode.style.display=n;
	inf(v);
	document.onkeypress='';
}

function initmb()
{
	var ab='absolute';
	var n='none';
	var obody=document.getElementsByTagName('body')[0];
	var frag=document.createDocumentFragment();
	var obol=document.createElement('div');
	obol.setAttribute('id','ol');
	obol.style.display=n;
	obol.style.position=ab;
	obol.style.top=0;
	obol.style.left=0;
	obol.style.zIndex=998;
	obol.style.width='100%';
	frag.appendChild(obol);
	/*build rounded corners*/
	var brtop = document.createElement("b");
	brtop.className = "rtop";
	var br1 = document.createElement("b");
	br1.className = "r1";
	var br2 = document.createElement("b");
	br2.className = "r2";
	var br3 = document.createElement("b");
	br3.className = "r3";
	var br4 = document.createElement("b");
	br4.className = "r4";
	brtop.appendChild(br1);
	brtop.appendChild(br2);
	brtop.appendChild(br3);
	brtop.appendChild(br4);
	
	var rbottom = document.createElement("b");
	rbottom.className = "rbottom";
	var bb1 = document.createElement("b");
	bb1.className = "r4";
	var bb2 = document.createElement("b");
	bb2.className = "r3";
	var bb3 = document.createElement("b");
	bb3.className = "r2";
	var bb4 = document.createElement("b");
	bb4.className = "r1";
	rbottom.appendChild(bb1);
	rbottom.appendChild(bb2);
	rbottom.appendChild(bb3);
	rbottom.appendChild(bb4);
	
	var rDiv = document.createElement("div"); //holds rounded corners
	rDiv.style.display=n;
	rDiv.style.position=ab;
	rDiv.style.zIndex=1000;
	//add rounded corners (top)
	rDiv.appendChild(brtop);
	
	var obbx=document.createElement('div');//content
	obbx.setAttribute('id','mbox');
	
	var obl=document.createElement('span');
	obbx.appendChild(obl);
	var obbxd=document.createElement('div');
	obbxd.setAttribute('id','mbd');
	obl.appendChild(obbxd);
	
	//add content
	rDiv.appendChild(obbx);
	//add rounded corners (botton)
	rDiv.appendChild(rbottom);
	
	frag.insertBefore(rDiv,obol.nextSibling);
	
	obody.insertBefore(frag,obody.firstChild);
	window.onscroll = scrollFix; 
	window.onresize = sizeFix;
}